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26 U.S.C. 6659A: Repealed. Pub. L. 101–239, title VII, § 7721(c)(2) , Dec. 19, 1989 , 103 Stat. 2399Text contains those laws in effect through Public Law 119-120 (October 7, 2026).
From Title 26-INTERNAL REVENUE CODECHAPTER 68-ADDITIONS TO THE TAX, ADDITIONAL AMOUNTS, AND ASSESSABLE PENALTIES

§§6659A, 6661. Repealed. Pub. L. 101–239, title VII, § 7721(c)(2) , Dec. 19, 1989 , 103 Stat. 2399

Section 6659A, added Pub. L. 99–514, title XI, § 1138(a), Oct. 22, 1986, 100 Stat. 2486, related to additions to tax in case of overstatements of pension liabilities.

Section 6660, added Pub. L. 98–369, div. A, title I, § 155(c)(2)(A), July 18, 1984, 98 Stat. 694; amended Pub. L. 99–514, title XVIII, §§ 1811(d), 1899A(57), Oct. 22, 1986, 100 Stat. 2833, 2961, related to additions to tax in case of valuation understatements for purposes of estate or gift taxes.

A prior section 6660 was renumbered section 6662 of this title.

Section 6661, added Pub. L. 97–248, title III, § 323(a), Sept. 3, 1982, 96 Stat. 613; amended Pub. L. 97–354, § 5(a)(42), Oct. 19, 1982, 96 Stat. 1697; Pub. L. 98–369, div. A, title VII, § 714(h)(3), July 18, 1984, 98 Stat. 962; Pub. L. 99–509, title VIII, § 8002(a), (c), Oct. 21, 1986, 100 Stat. 1951; Pub. L. 99–514, title XV, § 1504(a), Oct. 22, 1986, 100 Stat. 2743, related to substantial understatements of liability.

Statutory Notes and Related Subsidiaries

Effective Date of Repeal

Repeal applicable to returns the due date for which (determined without regard to extensions) is after Dec. 31, 1989, see section 7721(d) of Pub. L. 101–239, set out as an Effective Date of 1989 Amendment note under section 461 of this title.